US20210039022A1 - Filter for a filtration device - Google Patents
Filter for a filtration device Download PDFInfo
- Publication number
- US20210039022A1 US20210039022A1 US16/966,860 US201816966860A US2021039022A1 US 20210039022 A1 US20210039022 A1 US 20210039022A1 US 201816966860 A US201816966860 A US 201816966860A US 2021039022 A1 US2021039022 A1 US 2021039022A1
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- United States
- Prior art keywords
- filter
- arms
- longitudinal axis
- diameter
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 14
- 230000000295 complement effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 241000238634 Libellulidae Species 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000000717 retained effect Effects 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 241000305776 Rynchops Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
- E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
- E04H4/1209—Treatment of water for swimming pools
- E04H4/1272—Skimmers integrated in the pool wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/02—Filtering elements having a conical form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/31—Other construction details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
Definitions
- the present disclosure relates to a filter intended to be disposed in a water filtration device, for example in a swimming pool skimmer.
- Filtration devices for pool skimmers generally have a first filtration stage with an inlet filter acting as a pre-filter.
- each skimmer model has its own inlet filter model.
- Each skimmer manufacturer has several different skimmer models.
- Skimmers have an inlet duct, the geometry of which varies according to the model, especially the diameter and height.
- the total number of inlet filter models is nowadays high, which makes it difficult to replace filters on older models. Indeed, the professional sellers of swimming pool equipment cannot have all the references suitable for the different skimmer models. This leads to long lead times and high replacement costs.
- an input filter is necessary for a skimmer to function properly. Indeed, the filter makes it possible to retain plants, insects or other solid elements. Without an inlet filter, these elements penetrate into the skimmer, hindering its operation.
- the inventors have designed a filter that can be used as an input filter, adapting to different models of skimmers.
- the disclosed embodiments make it possible to obtain the filter, and to use it on inlet ducts of different dimensions, in particular of different diameters.
- a first object of the present disclosure is a filter, intended to be inserted in a water filtration system, the filtration system having an inlet duct extending around an inlet axis, according to an inlet diameter, the inlet duct being configured to collect the water to be filtered, the filter extending around a longitudinal axis, and comprising:
- the filter can have one of the following features, taken alone or in combination:
- a second object of the present disclosure is a method of inserting a filter, according to the first object of the present disclosure, into an inlet duct of a filtration system, the inlet duct extending around an inlet axis, according to an inlet diameter, the method comprising:
- Adjustment is made prior to insertion.
- the duct may have a shoulder, corresponding to a reduction in the inlet diameter.
- the filter can then rest on the shoulder.
- FIGS. 1A, 1B and 1C represent a first embodiment of the present disclosure.
- FIG. 2 illustrates a second embodiment of the present disclosure.
- FIGS. 3A, 3B and 3C represent a third embodiment of the present disclosure.
- FIGS. 4A, 4B and 4C represent a fourth embodiment of the present disclosure.
- FIGS. 1A to 1C A first embodiment of a filter 1 according to the present disclosure is shown in FIGS. 1A to 1C . It is intended to be introduced into an inlet duct 2 of a filtration module or skimmer.
- the filter 1 comprises a body represented in FIG. 1A .
- the body of the filter 1 has a bottom wall 11 , forming a filter bottom.
- the bottom wall 11 extends around a longitudinal axis Z.
- the bottom wall 11 extends in a radial plane XY, perpendicular to the longitudinal axis Z.
- the bottom wall 11 is preferably parallel or substantially parallel to the radial plane XY. Substantially parallel means parallel within an angular tolerance of +/ ⁇ 30°.
- the bottom wall 11 is symmetrical with respect to the longitudinal axis Z.
- the bottom wall 11 may be solid or have orifices, the latter being intended to collect solid elements that it is desired to retain in the filter 1 .
- the solid elements may be, in particular, plants, insects, stones or other solid elements that are to be retained.
- the size of the orifices determines the filtration size, i.e., the minimum size of the elements to be retained.
- the orifices may have a diameter, or a larger diagonal, ranging from a few ⁇ m, e.g., 10 ⁇ m, to 1 cm or 2 cm.
- the bottom wall 11 can be flat or have a truncated cone section.
- the filter body also comprises arms 20 , connected to the bottom wall 11 and extending to an upper end 12 , which is annular in shape.
- the upper end 12 extends around the longitudinal axis Z.
- Each arm 20 is connected to the bottom wall 11 by a lower edge 21 .
- Each arm 20 extends between the lower edge 21 and an upper edge 22 .
- the upper edges 22 of each arm 20 form part of the upper end 12 of the filter 1 .
- the upper end 12 delimits an opening 13 , through which the water to be filtered enters the filter 1 .
- the upper end 12 can have a circular or polygonal shape.
- the arms 20 form part of a side wall 14 of the filter 1 .
- the side wall 14 is an annular wall, extending transversely to the bottom wall 11 , around the longitudinal axis Z.
- the space bounded by side wall 14 , bottom wall 11 and the upper end 12 corresponds to the interior of the filter 1 .
- the bottom wall 11 defines a diameter, less than or equal to the diameter of the upper end 12 .
- the arms 20 are made of solid material. This may be plastic or light metal. The use of plastic reduces the manufacturing cost.
- each arm 20 forms a bend, facing outward from the filter 1 , to provide a peripheral groove 23 extending around each arm 20 .
- a filter membrane 25 can be held by the arms 20 , as shown in FIG. 1B .
- the filter membrane 25 is placed inside the filter 1 , i.e., in the space bounded by the bottom wall 11 and the arms 20 .
- the filter membrane 25 is pressed against the arms 20 up to their upper edge 22 and against the bottom wall 11 .
- the filter membrane 25 can be removed. This allows it to be removed for cleaning.
- the filter membrane 25 can be attached to the upper edge 22 of each arm 20 . For example, it can be fixed by means of an elastic ring extending into the peripheral groove 23 .
- the filter membrane 25 also defines a size of the filter 1 .
- the filter membrane 25 is a complementary wall, which together with the arms 20 form the side wall 14 of the filter 1 .
- the arms 20 have a supporting function, while the filter membrane 25 , which is supported by the arms, has a filtering function.
- the filter membrane 25 is flexible, so that it can adapt to the shape of the bottom wall 11 and the arms 20 . It can then adapt to a variation in the inclination of the arms 20 in relation to the longitudinal axis Z, described below.
- an adjustment means 26 has also been shown, allowing the size of the filter 1 to be adjusted.
- the adjustment means 26 has a wire 27 , extending into the peripheral groove 23 , that can slide into the peripheral groove 23 .
- the wire 27 engages in a holding element 28 , which holds the wire 27 .
- a user can grab the holding element 28 and move the filter body away from the holding element 28 . This reduces the length of wire 27 that is engaged in the peripheral groove 23 .
- the holding element 28 can be a sleeve. It is thus easily accessible and can be handled by a user.
- each arm 20 forms an angle of inclination ⁇ with respect to the longitudinal axis Z.
- the inclination of each arm 20 is such that each arm 20 gradually deviates from the longitudinal axis Z from the lower edge 21 to the upper edge 22 .
- the angle of inclination ⁇ is adjustable for each arm 20 and can vary from 0° to 450 or even 0° to 60 or more. When the angle of inclination is 0°, the arm 20 is parallel to the longitudinal Z axis.
- the filter 1 is such that at rest, i.e., without stress on the arms 20 , the arms 20 extend at an at rest angle ⁇ 0 with respect to the longitudinal axis Z.
- the at rest angle ⁇ 0 is, for example, between 200 or 300 and 600 or more.
- Each arm 20 can be deformable, allowing the inclination ⁇ to be adjusted and, in particular, reduced.
- each arm 20 can be rigid, with inclination adjustment being carried out at the lower edge 21 .
- the lower edge 21 of each arm 20 is then arranged to allow the arm 20 to rotate about an axis of rotation in the XY radial plane. The rotation of the arm 20 allows the arm 20 to move toward or away from the longitudinal axis Z.
- the arms 20 tend to move closer to their rest position due to the elasticity of the arms 20 or the junction between the arms 20 and the bottom wall 11 .
- the angle of inclination ⁇ of the arms 20 in relation to the longitudinal axis Z corresponds to the at rest angle ⁇ 0 .
- the deformation of the arms 20 in relation to their position at rest, is elastic.
- the arms 20 tend to incline at the angle of inclination at rest ⁇ 0 .
- the arms 20 extend around the longitudinal axis Z. Their lower edge 21 is arranged at the periphery of the bottom wall 11 , or at a distance of less than 2 cm or 3 cm from the periphery.
- the inclination of the arms 20 can be used to change the diameter D of the filter 1 .
- Filter diameter is the maximum diameter of the filter 1 .
- the filter diameter corresponds to the diameter of the annular upper end 12 .
- the greater the angle of inclination ⁇ the larger the filter diameter D.
- the diameter adjustment by adjusting the inclination of the arms 20 , makes it possible to adjust the diameter D of the filter 1 in relation to a diameter D′ of the inlet duct 2 .
- the diameter of the upper end 12 corresponds to a diameter of a circle in which it is inscribed.
- the filter 1 In its rest position, the filter 1 has a larger diameter D than the diameter D′ of the inlet duct 2 .
- the diameter D of the filter 1 By adjusting the inclination of the arms 20 , by tightening the wire 27 , the diameter D of the filter 1 is reduced, allowing the filter 1 to be inserted in the inlet duct 2 .
- the stress exerted by the wire 27 on the arms 20 is released.
- the arms 20 then tend to move away from the longitudinal axis Z towards their resting inclination. They thus rest against the inner wall of the inlet duct 2 . This allows the filter 1 to be held in place.
- the diameter D of the filter 1 then corresponds to the diameter D′ of the inlet duct 2 .
- the filter 1 can also have legs 30 , connected to the bottom wall 11 .
- the bottom wall 11 is located between each leg 30 and the arms 20 .
- Each leg 30 allows the bottom wall 11 to rest on a support 3 inside the inlet duct 2 .
- the support 3 can be a shoulder in the inlet duct 2 , reducing the diameter D′ of the inlet duct 2 .
- each leg 30 is a plate oriented parallel to the longitudinal axis Z.
- the legs 30 take the form of six plates oriented parallel to the longitudinal axis Z, converging toward the latter, being angularly offset from each other by 60°.
- the legs 30 allow the bottom wall 11 to be raised relative to the support 3 , thus promoting the flow of water between the bottom wall 11 and the support 3 .
- the height of the legs 30 , parallel to the longitudinal axis Z, can, for example, be between 1 cm and 10 cm.
- the height of the arms 20 , parallel to the longitudinal axis Z, can, for example, be between 5 cm and 30 cm.
- the maximum diameter D of the filter 1 , in the radial plane XY, can be, for example, between 10 cm and 30 cm.
- FIG. 2 A second embodiment, in which the filter 1 has arms 20 forming part of the side wall 14 of the filter 1 , is shown in FIG. 2 .
- the arms 20 extend between the lower edge 21 , connected to the bottom wall 11 , and the upper edge 22 .
- Each arm 20 is configured such that the upper edge 22 is capable of being moved towards or away from the longitudinal axis Z.
- the arms 20 are provided with orifices, allowing water to pass through and filter elements to be retained. The same applies to the bottom wall 11 forming the bottom of the filter 1 .
- the complementary wall 25 is solid. It is flexible, so that it can conform to a variation in the distance of the arms 20 from the longitudinal axis Z.
- each arm 20 is made of a rigid material.
- the lower edge of each arm 20 allows a rotational movement of each arm 20 so that it can move away from or towards the longitudinal axis Z.
- the complementary wall 25 consists of elementary sections 25 ′ separated from each other, each elementary section 25 ′ extending between two adjacent arms 20 .
- the complementary wall 25 can be provided with orifices, arranged at each elementary section 25 ′.
- Each elementary section 25 ′ then acts as a filtering membrane.
- the filter 1 has a means of adjusting the filter size (the adjustment means 26 ), formed by the 27 and the holding element 28 .
- the wire 27 is configured to slide into the peripheral groove 23 , formed at the upper edge 22 of each arm 20 .
- FIGS. 3A to 3C represent a third embodiment of the present disclosure, according to which the filter 1 has a side wall (the side wall 14 ) formed by rigid arms 20 .
- the arms 20 extend between the lower edge 21 , connected to the bottom wall 11 , and the upper edge 22 .
- the side wall 14 is also formed by the complementary wall 25 , the latter comprising elementary sections 25 ′ separated from each other.
- Each elementary section 25 ′ extends between two adjacent arms 20 .
- Each elementary section 25 ′ is connected to the bottom wall 11 , and has an upper edge 22 ′, capable of moving away from or towards the longitudinal axis Z.
- each elementary section 25 ′ is partially superimposed on the two adjacent arms 20 to which it is connected.
- the portion of the elemental section superimposed on an arm (of arms 20 ) varies depending on the distance of the arm 20 from the longitudinal axis Z. The closer the upper edge 22 of the arm 20 comes to the longitudinal axis Z, the more the part of the elementary section 25 ′ superimposed on the arm 20 increases.
- the filter has the adjustment means 26 for spreading or tightening the arms 20 .
- the adjustment means 26 has the wire 27 , passing through a slot 29 in at least one arm 20 .
- FIG. 3A shows the wire 27 connected to the arm 20 .
- the wire 27 passes through the respective slots 29 in three arms 20 , and engages into the peripheral groove 23 .
- An operator can grab the sleeve (holding element 28 ), so that the arms 20 are tightened.
- the arms 20 move apart to their rest position.
- the adjustment means 26 may be similar to that described in relation to the first and second embodiments.
- the arms 20 and the elementary sections 25 ′ have orifices for water filtration.
- the arms 20 or elementary sections 25 ′ can be solid.
- FIG. 3B also shows the bottom wall 11 , which has orifices through which the water to be filtered can flow.
- FIG. 3C is aside view of the filter 1 shown in FIGS. 3A and 3B .
- the filter 1 has legs 30 , extending from the bottom wall 11 , parallel to the longitudinal axis Z.
- the filter 1 as previously described can be inserted into the inlet duct 2 of a filtration system.
- the longitudinal axis Z of the filter 1 is then merged with the inlet axis Z′ ( FIG. 1C ) of the inlet duct 2 .
- the bottom wall 11 is inserted beforehand at the upper end 12 .
- the bottom wall 11 is thus arranged at a lower level, with respect to the vertical, than the upper end 12 .
- the adjustment of the filter diameter D i.e., the adjustment of the diameter of the upper end 12 , is carried out before the filter 1 is inserted.
- the arms 20 are stressed so as to reduce their inclination with respect to the longitudinal axis Z. This results in a reduction of the diameter D of the filter 1 .
- the filter 1 is inserted into the inlet duct 2 .
- the stress on the arms 20 is released.
- the arms 20 tend to return to their inclination at rest, away from the longitudinal axis Z. They then rest against the inner wall of the inlet duct 2 .
- the pressure of the arms 20 against the wall causes the diameter D of the filter 1 to reach the diameter D′ of the inlet duct 2 .
- the water flowing through inlet duct 2 flows through opening 13 , so that it is filtered by the filter 1 .
- FIGS. 4A to 4C represent an alternative embodiment, similar to that shown in FIGS. 3A to 3C .
- the filter 1 has a side wall (side wall 14 ) formed by rigid arms 20 .
- the arms 20 extend between their respective lower edges 21 , located near the bottom wall 11 , and their respective upper edges 22 , forming the upper end 12 of the filter 1 .
- the side wall 14 is also formed by the complementary wall 25 , in the form of flexible or rigid elementary sections 25 ′, separated from each other, having the same appearance and function as the arms 20 .
- the arms 20 and the elementary sections 25 ′ adjacent to them overlap, so as to ensure continuity of filtration along the side wall 14 .
- each elementary section 25 ′ can partially overlap at least one adjacent arm 20 .
- each arm 20 may overlap, at least partially, with an elementary section (of the elementary sections 25 ′) adjacent thereto.
- FIG. 4B it can be seen that the legs 30 , the arms 20 , the bottom wall 11 , and the elementary sections 25 ′ are openwork.
- the upper edges 22 of the arms 20 and those of the additional elementary sections 25 ′ form the upper end 12 of the filter 1 , the latter being annular in shape. It defines the diameter of the filter 1 .
- the filter 1 has the adjustment means 26 for adjusting the filter size.
- the adjustment means 26 comprises, at each arm 20 , a tab 26 a , connected to the arm 20 and extending from the upper edge 22 of the arm 20 , parallel to the upper edge, towards the elementary section 25 ′ adjacent thereto.
- the tab 26 a has pins 26 p , which can engage in openings 26 b at the upper edge 22 of the adjacent elementary section 25 ′.
- the filter 1 has, at each elementary section 25 ′, the tab 26 a , connected to the elementary section 25 ′, and extending from the upper edge 22 of the latter, parallel to the upper edge 22 , in the direction of the arm 20 adjacent to it.
- the tab 26 has pins 26 p , which can engage in the openings 26 b in the upper edge 22 of the adjacent arm 20 .
- This adjustment means 26 allows simple and precise adjustment of the diameter D defined by the upper end 12 of the filter 1 .
- the filter 1 also has a holding handle 35 extending between two arms 20 or between two elementary sections 25 ′ or between one arm 20 and one elementary section 25 ′, preferably diametrically opposed.
- the holding handle 35 can be flexible or rigid. The fact that the holding handle 35 is flexible makes it possible to conform to different diameters of the filter 1 : the holding handle 35 can then have a variable radius of curvature depending on the diameter of the filter 1 . It can be inserted into orifices in the side wall 14 , at the level of an arm (of the arms 20 ) or an elementary section (of the elementary sections 25 ′). Such a handle (the holding handle 35 ) can be used for all the previously described embodiments.
Abstract
Description
- This application is a national phase entry under 35 U.S.C. § 371 of International Patent Application PCT/FR2018/053146, filed Dec. 6, 2018, designating the United States of America and published as International Patent Publication WO 2019/150006 A1 on Aug. 8, 2019, which claims the benefit under Article 8 of the Patent Cooperation Treaty to French Patent Application Serial No. 1870118, filed Feb. 2, 2018.
- The present disclosure relates to a filter intended to be disposed in a water filtration device, for example in a swimming pool skimmer.
- Filtration devices for pool skimmers generally have a first filtration stage with an inlet filter acting as a pre-filter. Currently each skimmer model has its own inlet filter model. Each skimmer manufacturer has several different skimmer models. Skimmers have an inlet duct, the geometry of which varies according to the model, especially the diameter and height. The total number of inlet filter models is nowadays high, which makes it difficult to replace filters on older models. Indeed, the professional sellers of swimming pool equipment cannot have all the references suitable for the different skimmer models. This leads to long lead times and high replacement costs.
- However, an input filter is necessary for a skimmer to function properly. Indeed, the filter makes it possible to retain plants, insects or other solid elements. Without an inlet filter, these elements penetrate into the skimmer, hindering its operation.
- The inventors have designed a filter that can be used as an input filter, adapting to different models of skimmers. The disclosed embodiments make it possible to obtain the filter, and to use it on inlet ducts of different dimensions, in particular of different diameters.
- A first object of the present disclosure is a filter, intended to be inserted in a water filtration system, the filtration system having an inlet duct extending around an inlet axis, according to an inlet diameter, the inlet duct being configured to collect the water to be filtered, the filter extending around a longitudinal axis, and comprising:
-
- an annular upper end, defining an opening around the longitudinal axis, to allow water to enter the filter, the upper end defining a diameter;
- a bottom wall, forming a bottom of the filter, extending opposite the opening; and
- a side wall, extending between the upper end and the bottom wall, around the longitudinal axis,
- the side wall and/or the bottom wall having orifices, so as to allow a flow of water through the orifices and to retain solid elements, the size of which is greater than a filtration size, defined by the orifices;
the filter being characterized in that the side wall comprises: - a plurality of arms, each arm extending between a lower edge connected to the bottom wall, and an upper edge, the upper edge forming part of the annular upper end;
- each arm extending from the bottom wall to the upper end away from the longitudinal axis at an inclination, the inclination between each arm and the longitudinal axis being adjustable so that the diameter of the upper end is variable according to the inclination of each arm; and
- a complementary wall, extending between each arm;
- so that when the filter is inserted into the inlet duct with the longitudinal axis parallel to the inlet axis, the inclination of the arms is adjusted, in particular reduced, so that the diameter of the upper end is adapted to the inlet diameter.
- The filter can have one of the following features, taken alone or in combination:
-
- Each arm is such that, in the absence of stress on one arm, it tends to extend, with respect to the longitudinal axis, at an angle of inclination, known as the angle of inclination at rest. The angle of inclination at rest is preferably between 20 and 60°.
- The bottom wall has a smaller diameter than the diameter of the opening.
- The complementary wall consists of elementary sections, each elementary section extending between two adjacent arms and being connected to them.
- At least one elementary section has orifices so as to allow water to flow through them.
- At least two arms are connected to an adjustment means, to move the arms towards or away from the longitudinal axis.
- The means of adjustment may include a wire, the actuation of which allows the arms to be moved towards or away from the longitudinal axis.
- The complementary wall is formed by a filtering membrane, extending between each arm, the filtering membrane being able to rest on the arms. The filter membrane can be flexible. It can be removable.
- Two arms may have a groove at their upper edge, configured so that the wire can slide into the groove. The groove may extend around the periphery of the ring end. If the inside of the filter is bounded by the side wall and the bottom wall, the groove may extend to the outside of the filter.
- The filter has at least one leg, connected to the bottom wall, the bottom wall extending between the leg and each arm, the leg being configured to rest inside the inlet duct.
- A second object of the present disclosure is a method of inserting a filter, according to the first object of the present disclosure, into an inlet duct of a filtration system, the inlet duct extending around an inlet axis, according to an inlet diameter, the method comprising:
-
- adjustment of the filter diameter by bringing the filter arms closer to the longitudinal axis of the filter so that the diameter at the upper end is smaller than the inlet diameter;
- an insertion of the filter into the inlet duct, the longitudinal axis of the filter being coincident with the inlet axis, the insertion being such that the bottom wall of the filter is arranged at a lower level, relative to the vertical, than the upper end; and
- after insertion, the arms are released so that the arms tend to move away from the longitudinal axis and come to rest against the inlet duct.
- Adjustment is made prior to insertion.
- The duct may have a shoulder, corresponding to a reduction in the inlet diameter. The filter can then rest on the shoulder.
- Other advantages and features will be more clearly apparent from the description that follows of particular embodiments of the present disclosure, given as non-exhaustive examples, and represented in the figures listed below.
-
FIGS. 1A, 1B and 1C represent a first embodiment of the present disclosure. -
FIG. 2 illustrates a second embodiment of the present disclosure. -
FIGS. 3A, 3B and 3C represent a third embodiment of the present disclosure. -
FIGS. 4A, 4B and 4C represent a fourth embodiment of the present disclosure. - A first embodiment of a
filter 1 according to the present disclosure is shown inFIGS. 1A to 1C . It is intended to be introduced into aninlet duct 2 of a filtration module or skimmer. According to this embodiment, thefilter 1 comprises a body represented inFIG. 1A . The body of thefilter 1 has abottom wall 11, forming a filter bottom. Thebottom wall 11 extends around a longitudinal axis Z. - In this example, the
bottom wall 11 extends in a radial plane XY, perpendicular to the longitudinal axis Z. Thebottom wall 11 is preferably parallel or substantially parallel to the radial plane XY. Substantially parallel means parallel within an angular tolerance of +/−30°. Preferably thebottom wall 11 is symmetrical with respect to the longitudinal axis Z. Thebottom wall 11 may be solid or have orifices, the latter being intended to collect solid elements that it is desired to retain in thefilter 1. The solid elements may be, in particular, plants, insects, stones or other solid elements that are to be retained. The size of the orifices determines the filtration size, i.e., the minimum size of the elements to be retained. For example, the orifices may have a diameter, or a larger diagonal, ranging from a few μm, e.g., 10 μm, to 1 cm or 2 cm. - The
bottom wall 11 can be flat or have a truncated cone section. - The filter body also comprises
arms 20, connected to thebottom wall 11 and extending to anupper end 12, which is annular in shape. Theupper end 12 extends around the longitudinal axis Z. Eacharm 20 is connected to thebottom wall 11 by alower edge 21. Eacharm 20 extends between thelower edge 21 and anupper edge 22. The upper edges 22 of eacharm 20 form part of theupper end 12 of thefilter 1. Theupper end 12 delimits anopening 13, through which the water to be filtered enters thefilter 1. Theupper end 12 can have a circular or polygonal shape. - The
arms 20 form part of aside wall 14 of thefilter 1. Theside wall 14 is an annular wall, extending transversely to thebottom wall 11, around the longitudinal axis Z. The space bounded byside wall 14,bottom wall 11 and theupper end 12 corresponds to the interior of thefilter 1. - The
bottom wall 11 defines a diameter, less than or equal to the diameter of theupper end 12. - In the example described in connection with
FIGS. 1A to 1C , thearms 20 are made of solid material. This may be plastic or light metal. The use of plastic reduces the manufacturing cost. - In this example, the
upper edge 22 of eacharm 20 forms a bend, facing outward from thefilter 1, to provide aperipheral groove 23 extending around eacharm 20. - A
filter membrane 25 can be held by thearms 20, as shown inFIG. 1B . In this figure, thefilter membrane 25 is placed inside thefilter 1, i.e., in the space bounded by thebottom wall 11 and thearms 20. Thefilter membrane 25 is pressed against thearms 20 up to theirupper edge 22 and against thebottom wall 11. Thefilter membrane 25 can be removed. This allows it to be removed for cleaning. Thefilter membrane 25 can be attached to theupper edge 22 of eacharm 20. For example, it can be fixed by means of an elastic ring extending into theperipheral groove 23. Thefilter membrane 25 also defines a size of thefilter 1. - The
filter membrane 25 is a complementary wall, which together with thearms 20 form theside wall 14 of thefilter 1. In this embodiment, thearms 20 have a supporting function, while thefilter membrane 25, which is supported by the arms, has a filtering function. In this example, thefilter membrane 25 is flexible, so that it can adapt to the shape of thebottom wall 11 and thearms 20. It can then adapt to a variation in the inclination of thearms 20 in relation to the longitudinal axis Z, described below. - In
FIG. 1B , an adjustment means 26 has also been shown, allowing the size of thefilter 1 to be adjusted. The adjustment means 26 has awire 27, extending into theperipheral groove 23, that can slide into theperipheral groove 23. Thewire 27 engages in a holdingelement 28, which holds thewire 27. A user can grab the holdingelement 28 and move the filter body away from the holdingelement 28. This reduces the length ofwire 27 that is engaged in theperipheral groove 23. This makes it possible to adjust the size of thefilter 1, as further described in connection withFIG. 1C . For example, the holdingelement 28 can be a sleeve. It is thus easily accessible and can be handled by a user. - As shown in
FIG. 1C , eacharm 20 forms an angle of inclination α with respect to the longitudinal axis Z. The inclination of eacharm 20 is such that eacharm 20 gradually deviates from the longitudinal axis Z from thelower edge 21 to theupper edge 22. The angle of inclination α is adjustable for eacharm 20 and can vary from 0° to 450 or even 0° to 60 or more. When the angle of inclination is 0°, thearm 20 is parallel to the longitudinal Z axis. - Whatever the embodiment, the
filter 1 is such that at rest, i.e., without stress on thearms 20, thearms 20 extend at an at rest angle α0 with respect to the longitudinal axis Z. The at rest angle α0 is, for example, between 200 or 300 and 600 or more. Eacharm 20 can be deformable, allowing the inclination α to be adjusted and, in particular, reduced. Alternatively, eacharm 20 can be rigid, with inclination adjustment being carried out at thelower edge 21. Thelower edge 21 of eacharm 20 is then arranged to allow thearm 20 to rotate about an axis of rotation in the XY radial plane. The rotation of thearm 20 allows thearm 20 to move toward or away from the longitudinal axis Z. In the absence of stress, thearms 20 tend to move closer to their rest position due to the elasticity of thearms 20 or the junction between thearms 20 and thebottom wall 11. In the rest position, the angle of inclination α of thearms 20 in relation to the longitudinal axis Z corresponds to the at rest angle α0. In other words, when the inclination of thearms 20 is changed in relation to the angle of inclination at rest by applying a stress to thearms 20, the deformation of thearms 20, in relation to their position at rest, is elastic. When the stress stops, thearms 20 tend to incline at the angle of inclination at rest α0. - The
arms 20 extend around the longitudinal axis Z. Theirlower edge 21 is arranged at the periphery of thebottom wall 11, or at a distance of less than 2 cm or 3 cm from the periphery. - As shown in
FIG. 1C , the inclination of thearms 20 can be used to change the diameter D of thefilter 1. Filter diameter is the maximum diameter of thefilter 1. In the examples shown, the filter diameter corresponds to the diameter of the annularupper end 12. The greater the angle of inclination α, the larger the filter diameter D. The diameter adjustment, by adjusting the inclination of thearms 20, makes it possible to adjust the diameter D of thefilter 1 in relation to a diameter D′ of theinlet duct 2. - Where the
upper end 12 is not circular, the diameter of theupper end 12, corresponds to a diameter of a circle in which it is inscribed. - In its rest position, the
filter 1 has a larger diameter D than the diameter D′ of theinlet duct 2. By adjusting the inclination of thearms 20, by tightening thewire 27, the diameter D of thefilter 1 is reduced, allowing thefilter 1 to be inserted in theinlet duct 2. After thefilter 1 has been inserted into theinlet duct 2, the stress exerted by thewire 27 on thearms 20 is released. Thearms 20 then tend to move away from the longitudinal axis Z towards their resting inclination. They thus rest against the inner wall of theinlet duct 2. This allows thefilter 1 to be held in place. The diameter D of thefilter 1 then corresponds to the diameter D′ of theinlet duct 2. - The
filter 1 can also havelegs 30, connected to thebottom wall 11. Thebottom wall 11 is located between eachleg 30 and thearms 20. Eachleg 30 allows thebottom wall 11 to rest on asupport 3 inside theinlet duct 2. For example, thesupport 3 can be a shoulder in theinlet duct 2, reducing the diameter D′ of theinlet duct 2. Preferably, eachleg 30 is a plate oriented parallel to the longitudinal axis Z. In the examples shown inFIGS. 1C, 2 and 3C , thelegs 30 take the form of six plates oriented parallel to the longitudinal axis Z, converging toward the latter, being angularly offset from each other by 60°. Thelegs 30 allow thebottom wall 11 to be raised relative to thesupport 3, thus promoting the flow of water between thebottom wall 11 and thesupport 3. - The height of the
legs 30, parallel to the longitudinal axis Z, can, for example, be between 1 cm and 10 cm. The height of thearms 20, parallel to the longitudinal axis Z, can, for example, be between 5 cm and 30 cm. The maximum diameter D of thefilter 1, in the radial plane XY, can be, for example, between 10 cm and 30 cm. These dimensions can be applied, individually or in combination, in any embodiment. - A second embodiment, in which the
filter 1 hasarms 20 forming part of theside wall 14 of thefilter 1, is shown inFIG. 2 . As previously described, thearms 20 extend between thelower edge 21, connected to thebottom wall 11, and theupper edge 22. Eacharm 20 is configured such that theupper edge 22 is capable of being moved towards or away from the longitudinal axis Z. Thearms 20 are provided with orifices, allowing water to pass through and filter elements to be retained. The same applies to thebottom wall 11 forming the bottom of thefilter 1. Between eacharm 20 there is acomplementary wall 25. In the example shown inFIG. 2 , thecomplementary wall 25 is solid. It is flexible, so that it can conform to a variation in the distance of thearms 20 from the longitudinal axis Z. Thearms 20 are made of a rigid material. However, as in the first embodiment, the lower edge of eacharm 20 allows a rotational movement of eacharm 20 so that it can move away from or towards the longitudinal axis Z. In this example, thecomplementary wall 25 consists ofelementary sections 25′ separated from each other, eachelementary section 25′ extending between twoadjacent arms 20. - As an alternative, the
complementary wall 25 can be provided with orifices, arranged at eachelementary section 25′. Eachelementary section 25′ then acts as a filtering membrane. As in the first embodiment, thefilter 1 has a means of adjusting the filter size (the adjustment means 26), formed by the 27 and the holdingelement 28. Thewire 27 is configured to slide into theperipheral groove 23, formed at theupper edge 22 of eacharm 20. -
FIGS. 3A to 3C represent a third embodiment of the present disclosure, according to which thefilter 1 has a side wall (the side wall 14) formed byrigid arms 20. As previously described, thearms 20 extend between thelower edge 21, connected to thebottom wall 11, and theupper edge 22. Theside wall 14 is also formed by thecomplementary wall 25, the latter comprisingelementary sections 25′ separated from each other. Eachelementary section 25′ extends between twoadjacent arms 20. Eachelementary section 25′ is connected to thebottom wall 11, and has anupper edge 22′, capable of moving away from or towards the longitudinal axis Z. - In this third embodiment, the
arms 20 and theelementary sections 25′ are rigid. As can be seen inFIG. 3A , eachelementary section 25′ is partially superimposed on the twoadjacent arms 20 to which it is connected. The portion of the elemental section superimposed on an arm (of arms 20) varies depending on the distance of thearm 20 from the longitudinal axis Z. The closer theupper edge 22 of thearm 20 comes to the longitudinal axis Z, the more the part of theelementary section 25′ superimposed on thearm 20 increases. - The filter has the adjustment means 26 for spreading or tightening the
arms 20. The adjustment means 26 has thewire 27, passing through aslot 29 in at least onearm 20.FIG. 3A shows thewire 27 connected to thearm 20. Thewire 27 passes through therespective slots 29 in threearms 20, and engages into theperipheral groove 23. An operator can grab the sleeve (holding element 28), so that thearms 20 are tightened. As described in connection with the first embodiment, when the operator releases the sleeve (holding element 28), thearms 20 move apart to their rest position. - Alternatively, the adjustment means 26 may be similar to that described in relation to the first and second embodiments.
- In the example shown in
FIG. 3A , thearms 20 and theelementary sections 25′ have orifices for water filtration. Depending on the variant, thearms 20 orelementary sections 25′ can be solid. - The alternating arrangement of the
arms 20 and theelementary sections 25′ can be seen inFIG. 3B .FIG. 3B also shows thebottom wall 11, which has orifices through which the water to be filtered can flow. -
FIG. 3C is aside view of thefilter 1 shown inFIGS. 3A and 3B . As in the previous embodiments, thefilter 1 haslegs 30, extending from thebottom wall 11, parallel to the longitudinal axis Z. - The
filter 1 as previously described can be inserted into theinlet duct 2 of a filtration system. Preferably, the longitudinal axis Z of thefilter 1 is then merged with the inlet axis Z′ (FIG. 1C ) of theinlet duct 2. Thebottom wall 11 is inserted beforehand at theupper end 12. Thebottom wall 11 is thus arranged at a lower level, with respect to the vertical, than theupper end 12. - The adjustment of the filter diameter D, i.e., the adjustment of the diameter of the
upper end 12, is carried out before thefilter 1 is inserted. To do this, thearms 20 are stressed so as to reduce their inclination with respect to the longitudinal axis Z. This results in a reduction of the diameter D of thefilter 1. Once the diameter D of thefilter 1 gets smaller than the diameter D′ of theinlet duct 2, thefilter 1 is inserted into theinlet duct 2. After thefilter 1 has been inserted, the stress on thearms 20 is released. Thearms 20 tend to return to their inclination at rest, away from the longitudinal axis Z. They then rest against the inner wall of theinlet duct 2. The pressure of thearms 20 against the wall causes the diameter D of thefilter 1 to reach the diameter D′ of theinlet duct 2. Thus, the water flowing throughinlet duct 2 flows throughopening 13, so that it is filtered by thefilter 1. -
FIGS. 4A to 4C represent an alternative embodiment, similar to that shown inFIGS. 3A to 3C . Thefilter 1 has a side wall (side wall 14) formed byrigid arms 20. As shown inFIG. 4B , thearms 20 extend between their respectivelower edges 21, located near thebottom wall 11, and their respectiveupper edges 22, forming theupper end 12 of thefilter 1. Theside wall 14 is also formed by thecomplementary wall 25, in the form of flexible or rigidelementary sections 25′, separated from each other, having the same appearance and function as thearms 20. Thearms 20 and theelementary sections 25′ adjacent to them overlap, so as to ensure continuity of filtration along theside wall 14. Thus, eachelementary section 25′ can partially overlap at least oneadjacent arm 20. Conversely, eacharm 20 may overlap, at least partially, with an elementary section (of theelementary sections 25′) adjacent thereto. - In
FIG. 4B , it can be seen that thelegs 30, thearms 20, thebottom wall 11, and theelementary sections 25′ are openwork. - According to this embodiment, the
upper edges 22 of thearms 20 and those of the additionalelementary sections 25′ form theupper end 12 of thefilter 1, the latter being annular in shape. It defines the diameter of thefilter 1. - At the
upper end 12, thefilter 1 has the adjustment means 26 for adjusting the filter size. According to this embodiment, as shown inFIG. 4C , the adjustment means 26 comprises, at eacharm 20, atab 26 a, connected to thearm 20 and extending from theupper edge 22 of thearm 20, parallel to the upper edge, towards theelementary section 25′ adjacent thereto. Thetab 26 a haspins 26 p, which can engage inopenings 26 b at theupper edge 22 of the adjacentelementary section 25′. In the same way, thefilter 1 has, at eachelementary section 25′, thetab 26 a, connected to theelementary section 25′, and extending from theupper edge 22 of the latter, parallel to theupper edge 22, in the direction of thearm 20 adjacent to it. Thetab 26 haspins 26 p, which can engage in theopenings 26 b in theupper edge 22 of theadjacent arm 20. This adjustment means 26 allows simple and precise adjustment of the diameter D defined by theupper end 12 of thefilter 1. - The
filter 1 also has a holdinghandle 35 extending between twoarms 20 or between twoelementary sections 25′ or between onearm 20 and oneelementary section 25′, preferably diametrically opposed. The holding handle 35 can be flexible or rigid. The fact that the holdinghandle 35 is flexible makes it possible to conform to different diameters of the filter 1: the holdinghandle 35 can then have a variable radius of curvature depending on the diameter of thefilter 1. It can be inserted into orifices in theside wall 14, at the level of an arm (of the arms 20) or an elementary section (of theelementary sections 25′). Such a handle (the holding handle 35) can be used for all the previously described embodiments.
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1870118 | 2018-02-02 | ||
FR1870118A FR3077506B1 (en) | 2018-02-02 | 2018-02-02 | FILTER FOR FILTRATION DEVICE |
PCT/FR2018/053146 WO2019150006A1 (en) | 2018-02-02 | 2018-12-06 | Filter for a filtering device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20210039022A1 true US20210039022A1 (en) | 2021-02-11 |
US11524252B2 US11524252B2 (en) | 2022-12-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/966,860 Active US11524252B2 (en) | 2018-02-02 | 2018-12-06 | Filter for a filtration device |
Country Status (4)
Country | Link |
---|---|
US (1) | US11524252B2 (en) |
EP (1) | EP3746209B1 (en) |
FR (1) | FR3077506B1 (en) |
WO (1) | WO2019150006A1 (en) |
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US20220258091A1 (en) * | 2020-09-25 | 2022-08-18 | Mark Henderson | Pool filter assembly |
US11524252B2 (en) * | 2018-02-02 | 2022-12-13 | ABP—Aquilina Bouvier Pool | Filter for a filtration device |
US20230108937A1 (en) * | 2021-10-06 | 2023-04-06 | Luis Eduardo Perez | Pool debris collection container |
US20230220693A1 (en) * | 2022-01-07 | 2023-07-13 | Blue Square Manufacturing, Llc | Skimmer Cover Assembly |
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US11825974B1 (en) * | 2020-03-01 | 2023-11-28 | Michael O. Murphy | Expandable strainer insert for bottles |
US20230220695A1 (en) * | 2022-01-07 | 2023-07-13 | Blue Square Manufacturing, Llc | Skimmer Assembly |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US11524252B2 (en) * | 2018-02-02 | 2022-12-13 | ABP—Aquilina Bouvier Pool | Filter for a filtration device |
US20220258091A1 (en) * | 2020-09-25 | 2022-08-18 | Mark Henderson | Pool filter assembly |
US11883771B2 (en) * | 2020-09-25 | 2024-01-30 | Mark Henderson | Pool filter assembly |
US20230108937A1 (en) * | 2021-10-06 | 2023-04-06 | Luis Eduardo Perez | Pool debris collection container |
US20230220693A1 (en) * | 2022-01-07 | 2023-07-13 | Blue Square Manufacturing, Llc | Skimmer Cover Assembly |
Also Published As
Publication number | Publication date |
---|---|
US11524252B2 (en) | 2022-12-13 |
EP3746209A1 (en) | 2020-12-09 |
FR3077506A1 (en) | 2019-08-09 |
EP3746209B1 (en) | 2022-02-16 |
WO2019150006A1 (en) | 2019-08-08 |
FR3077506B1 (en) | 2020-01-17 |
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